Open Loop System Vs Closed Loop System
Control System
A control system is an arrangement of physical components connected or related in such a manner as to command, direct or regulate itself or another system is called control system.
Open Loop System
- An Open loop system is one in which the control action is independent of the output.
- Its Ability to perform accurately is determined by its calibration. As the calibration deteriorates, so does its performance.
- Generally easier build of open loop system.
- Generally not troubled with the problem of instability.
- presence of non-linearities causes malfunctioning.
- Input Command is the sole factor responsible for providing the control action.
Closed Loop System
- A Closed-loop System is one in which the control action depends on the output.
- The Control Action is provided by the difference between the input command and the corresponding output.
- it faithfully reproduces the input owing to feedback generally accuracy is high.
- Generally complicated and costly.
- Due to feedback action, the system has a tendency to oscillate.
- it usually performs accurately even in the presence of nonlinearities.
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